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A&P Airframe Oral Practice Questions > Aircraft Instruments > Flashcards

Aircraft Instruments Flashcards

1
Q
  1. What three flight instruments are normally operated from the pitot-static system?
A

Airspeed
VSI
Altimeter

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2
Q
  1. What instrument indications will result if the static pressure line becomes disconnected inside the cabin of a pressurized aircraft?
A

Altimeter & Airspeed - will be lower than normal
VSI - indicate momentary decent then return to zero

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3
Q
  1. Who is authorized to perform test to calibrate an altimeter?
A

Manufacture or certified repair station

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4
Q
  1. What is required after replacement of components connected to the pitot static system?
A

Leak test

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5
Q
  1. In wet - type vacuum pumps, what are the vanes made from?
A

Steel

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6
Q
  1. how are vanes of a wet-type vacuum pump lubricated?
A

Engine oil

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7
Q
  1. What are the sources of power to horoscopes instrument operation?
A

Vacuum
Electricity
Air pressure

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8
Q
  1. What causes an electric driven gyro rotor to tilt when aircraft is turned on?
A

Gyroscopic procession

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9
Q
  1. What is used as a guide for range marking of aircraft instruments?
A

Aircraft Specifications or TCDS & specific aircraft maintenance manual or flight manual

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10
Q
  1. Where are instrument range markings placed?
A

Outer edge of the cover glass

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11
Q
  1. What other type of mark is required when range markings are applied to the glass instrument cover?
A

Index mark used to indicate glass slippage

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12
Q
  1. What is a synchro-type remote indicating system?
A

Shows movement & position of

Landing gear
Wing flaps
Oil cooler doors
Or other moveable parts

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13
Q
  1. What type of fuel quantity system is an electric fuel measuring device that accurately determines the density weight of the fuel in the tanks of an aircraft?
A

Capacitor fuel type quantity system

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14
Q
  1. What is meant by “swinging a compass”?
A

Adjustment of North-South & East-West magnets to reduce deviation

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15
Q
  1. When inspecting a magnetic compass, the bowl should be filled with liquid and should not contain any bubbles or discolorations. What is the purpose of the liquid in the bow?
A

Dampen oscillations of the float

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16
Q
  1. What is the fluid used in a magnetic compass?
A

Clear fluid such as kerosene

17
Q
  1. Where is the compass correction card placed?
A

Near the compass in plain sight of pilot

18
Q
  1. Which instrument is used to indicate the speed of the crankshaft of a reciprocating engine and the speed of the main rotor assembly in a turbine engine?
A

Tachometer

19
Q
  1. What type of indicating system is used to indicate turbine engine exhaust fast temperature?
A

Thermocouple system

20
Q
  1. What does the manifold pressure gauge indicate when the engine is not operating?
A

Atmospheric pressure

21
Q
  1. What is used to check a manifold pressure gauge for correct indication when the engine is not operating?
A

Barometer or altimeter once its zero out

22
Q
  1. What is the meaning of the yellow range on the airspeed indicator?
A

Cautionary range

23
Q
  1. What does a Mach meter indicate?
A

Ratio aircraft speed to the speed of sound at a certain altitude & temperature

24
Q
  1. Why do you not try to remove a blockage in a pitot system?
A

Prevent further damage to system

A&P Airframe Oral Practice Questions (17 decks)

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